Can you explain how osteoclastogenesis is happens in the period of fetal growth?

Question: Can you explain how osteoclastogenesis is happens in the period of fetal growth?
- Keywords:
  fetal,
  growth,
  osteoclastogenesis,
  reproduction
Asked by aoifemiralles to Chris on 19 Jun 2013.
- Chris Whittle answered on 19 Jun 2013:
  
  I’m not too familiar with how this happens, but from what I know, the osteoclasts form from the fetal immune system and are active throughout development, hollowing out bones for marrow and allowing joints to form.

Question: Can you explain how osteoclastogenesis is happens in the period of fetal growth?